John "Thunderbolt" Doherty (Eastwood ) is a former thief whose razor-sharp wits and steely nerves made him a master of his profession, but he's about to reenter the criminal world with a new partner: Lightfoot (Bridges), a brash young drifter whose energy and exuberance give the veteran a new outlook on life.Their target: the seemingly impenetrable Montanta Armored Despository.After forming an uneasy alliance with Thunderbolt's former partners in crime (Kennedy and Lewis), they launch an amazing scheme that will test the limits of their endurance